As described earlier, the electrical current to the solenoid of a proportional valve needs to be regulated and not just simply switched on or off as is the case with a conventional valve.
作为简单描述，提供给比例阀电磁铁的电流需要被调节，不象应用常规阀的时仅有开关通或断那样简单。
Valve and strainers must be supported with conventional piping system support devices.
阀门和过滤器必须采用常规的管道系统支撑装置加以支撑。
Depending upon its size and voltage supply, a conventional switching solenoid valve will have an energisation response time of approximately 15 milli-seconds.
依据阀的大小和提供的电压，一个传统的开关电磁 阀对于一个得电动作的反应时间是15毫秒。
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